From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 69082C43143 for ; Mon, 1 Oct 2018 12:05:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 266FA2084C for ; Mon, 1 Oct 2018 12:05:28 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 266FA2084C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729265AbeJASmz (ORCPT ); Mon, 1 Oct 2018 14:42:55 -0400 Received: from foss.arm.com ([217.140.101.70]:47542 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728921AbeJASmy (ORCPT ); Mon, 1 Oct 2018 14:42:54 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 2C87018A; Mon, 1 Oct 2018 05:05:26 -0700 (PDT) Received: from arrakis.emea.arm.com (arrakis.Emea.Arm.com [10.4.12.129]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 8BC213F5A0; Mon, 1 Oct 2018 05:05:23 -0700 (PDT) Date: Mon, 1 Oct 2018 13:05:21 +0100 From: Catalin Marinas To: Suzuki K Poulose Cc: linux-arm-kernel@lists.infradead.org, peter.maydell@linaro.org, cdall@kernel.org, kvm@vger.kernel.org, marc.zyngier@arm.com, rkrcmar@redhat.com, will.deacon@arm.com, linux-kernel@vger.kernel.org, dave.martin@arm.com, eric.auger@redhat.com, julien.grall@arm.com, James Morse , pbonzini@redhat.com, kvmarm@lists.cs.columbia.edu Subject: Re: [PATCH v6 04/18] arm64: Add a helper for PARange to physical shift conversion Message-ID: <20181001120520.GA25071@arrakis.emea.arm.com> References: <20180926163258.20218-1-suzuki.poulose@arm.com> <20180926163258.20218-5-suzuki.poulose@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180926163258.20218-5-suzuki.poulose@arm.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Sep 26, 2018 at 05:32:40PM +0100, Suzuki K. Poulose wrote: > On arm64, ID_AA64MMFR0_EL1.PARange encodes the maximum Physical > Address range supported by the CPU. Add a helper to decode this > to actual physical shift. If we hit an unallocated value, return > the maximum range supported by the kernel. > This will be used by KVM to set the VTCR_EL2.T0SZ, as it > is about to move its place. Having this helper keeps the code > movement cleaner. > > Cc: Catalin Marinas > Cc: Marc Zyngier > Cc: James Morse > Cc: Christoffer Dall > Reviewed-by: Eric Auger > Signed-off-by: Suzuki K Poulose Acked-by: Catalin Marinas